Finding the Fourth Proportional to 14,373.77, 21,557.41 and 3,986.33

Step by Step Solution

1. Step 1: Write the proportion equation
   14,373.77 : 21,557.41 = 3,986.33 : x
2. Step 2: Convert to fraction form
   14,373.77/21,557.41 = 3,986.33/x
3. Step 3: Cross multiply
   14,373.77x = 21,557.41 × 3,986.33
4. Step 4: Simplify right side
   14,373.77x = 85,934,832.45
5. Step 5: Solve for x
   x = 85,934,832.45/14,373.77
6. Step 6: Final answer
   x = 5,978.59